Cutting tools and methods for machining, and machining heads for cutting tools.

Abstract

The present invention relates to a cutting tool, a machining head, and a method for cutting a rotating workpiece (19), comprising a tool base (12) including at least one machining head (16, 17) pre-installed on the tool base (12), the machining head receiving a cutting tool (31) via a retainer (21) aligned with a working cavity (18) for the workpiece (19) to be machined, wherein, viewed in the cutting direction, a feeding device (41) is pre-installed after the cutting tool (31) for applying dressing material (42) to the surface (20) of the workpiece (19) machined by the cutting tool (31).

Description

Technical Field

[0001] The present invention relates to a cutting tool, a method for cutting a rotating workpiece using such a cutting tool, and a machining head for such a cutting tool. Background Technology

[0002] According to DE 199 12 979 C1, a cutting tool is known for machining a rotating workpiece such as a brake disc. The cutting tool includes a tool body on which at least one machining head is pre-positioned. The machining head houses a cutting tool via a retainer, the cutting tool pointing towards a working cavity, where a rotating cutting tool is pre-positioned.

[0003] According to DE 10 2017 126 931 A1, a tool arrangement structure including a tool body and a method for cooling the tool body are known. In this embodiment, it is assumed that a minimum amount of lubrication or a minimum amount of cooling of the tool body is possible through a fluid flow supplied via a channel within the tool body.

[0004] Furthermore, according to JP H08-118 104 A, a cutting tool is known, comprising a diamond-sintered tool body. A separate nozzle is pre-installed between the tool and the machined surface after the tool to apply coolant and remove chips.

[0005] Furthermore, according to JP H06-31 502 A, a cutting tool is known to supply coolant through a feed channel within a machining head, wherein at the end of the feed channel and away from the tool, a nozzle-shaped insert with a 90° deflection is provided, through which coolant is supplied towards the tool to flush away chips at the cutting position.

[0006] With increasing interest in sustainability and the evolving climate change, saving energy and reducing emissions are crucial. During the operation of a braking system, consisting of brake pads and brake discs—the so-called friction system—particulate emissions are generated from braking. Additionally, wear occurs on the brake discs. Due to heightened environmental and health awareness, efforts are being made in all sectors to reduce fine particulate emissions, particularly through reducing erosion via this fixed friction system.

[0007] In braking systems, components subjected to wear and corrosion have been identified with a wide variety of coating schemes. Materials with higher abrasive wear resistance, such as aluminum matrix composites (AMCs) reinforced with hard material particles, are now available. These AMC composites require specialized processing to create a friction film on the surface of the processed composite, which reduces wear and thereby reduces particulate emissions. This particulate emission target applies not only to braking systems but also to other friction systems. Summary of the Invention

[0008] The object of the present invention is to provide a cutting tool and a method for cutting a rotating workpiece, as well as a machining head for such a cutting tool, making it possible to finish the machined surface of the workpiece after cutting.

[0009] This objective is achieved through a cutting tool for machining a rotating workpiece, wherein at least one machining head is pre-installed on the tool body, the machining head houses a cutting tool via a retainer, and the cutting tool is aligned with the working cavity of the workpiece to be machined. Viewed in the cutting direction, a feeding device is pre-installed behind the cutting tool for applying dressing material to the surface of the workpiece machined by the cutting tool. The feed inlet of the feeding device is pre-installed adjacent to the flank face of the cutting tool. By positioning this feeding device after the cutting tool, the distance between the cutting position and the dressing material feeding device is minimized, allowing the dressing material to be applied to the machined surface of the material and the surface to be sealed shortly after cutting. This minimizes or completely prevents possible reactions between the machined surface and the environment. Furthermore, by applying the dressing material, a friction film for reducing wear can be applied to the surface of the workpiece. Simultaneously, this can further improve the service life of such workpieces, particularly in friction systems such as brake discs and brake pads.

[0010] Furthermore, it is preferably assumed that the material guiding device is pre-installed on or adjacent to the processing head. This makes it possible for the feeding device to adapt to the workpiece to be processed and / or to the finishing material to be supplied.

[0011] Preferably, the feeding device is pre-installed on or within the holder of the machining tool. This allows for a compact structure of the machining head.

[0012] Specifically, the feed inlet of the feeding device is pre-set to be located within the end face of the retainer, which points towards the working chamber, and this end face preferably extends within a clearance angle that corresponds to or is greater than the clearance angle of the cutting tool. This allows for the supply of dressing material close to the cutting position of the workpiece.

[0013] The feeding device is preferably designed as a perforation in the holder, the perforation having an opening for loading dressing material opposite to the feed inlet. Thus, on the one hand, the dressing material can be easily loaded onto the holder, and on the other hand, the dressing material can be supplied directly adjacent to the tool's machining point or cutting position.

[0014] Preferably, an output device is pre-installed on the holder of the processing head, opposite to the cutting tool, through which the dressing material can be drawn out towards the working chamber via a feeding device. This allows the dressing material to be supplied in a compact form via a feeding device pre-installed on or within the holder.

[0015] Alternatively, the output device can be pre-configured to be detachable from the holder of the processing head and positionable relative to the working chamber. In this embodiment, the output device includes a feeding device with an inlet through which finishing material can be supplied to or output to the surface of the workpiece to be processed. According to this alternative embodiment, the output device can be designed as a component detachable from the processing head and positionable detachably relative to the workpiece to be processed.

[0016] Advantageously, the output device is detachably fixed to the retainer. On the one hand, this allows for easy loading of trimming material into the retainer. On the other hand, different output devices can be preset according to the trimming material, so as to control the feed speed and / or feed force accordingly, for example. The output device can also be preset to be fixed to the retainer, particularly welded to the retainer.

[0017] The output device preferably includes at least one interface opposite the retainer for operating the output device. This allows the media supply provided on the machine tool to be connected to the output device.

[0018] Advantageously, the output device includes a pressurizable punch through which the trimming material can be drawn out through the feed inlet of the feeding device. For example, the output device can be easily operated by applying compressed air or hydraulic pressure.

[0019] Furthermore, preferably, the trimming material is designed as a pin or rod, or as a profile body, and can be loaded into a perforated feeding device. The trimming material can also be designed as a friction lining, particularly as a plate or rectangle. The punch of the output device can also include a punch or pin that acts on the trimming material to convey it through the perforation of the feeding device.

[0020] In an advantageous embodiment of the cutting tool, the feed inlet of the dressing material feeding device is pre-oriented toward the working chamber, and preferably aligned with the working chamber at an angle of 90° or less. On the one hand, the dressing material can be supported by a retainer, extending directly into the working chamber. On the other hand, in a preferred design of the feed inlet at an acute angle relative to the working chamber, it is possible to increase the cross-section for applying the dressing material.

[0021] Preferably, two opposing machining heads are pre-installed on the tool body, with a gap-shaped working cavity formed between them. This allows for the simultaneous machining of two opposing surfaces of the workpiece.

[0022] Advantageously, at least one machining head is repositionably pre-set on the tool base to adjust the width of the working cavity. This allows the working cavity to be easily adjusted to reduce the machining allowance of the supplied workpiece by cutting. Advantageously, at least one machining head can be pre-set to adjust the width of the working cavity via an actuator. This can be achieved, for example, by manually adjusting a bolt to allow for fine-tuning. Electric, pneumatic, electromagnetic, and hydraulic actuators can also be pre-set.

[0023] At least one machining head is adjustable in terms of tool height, specifically adjustable relative to the opposing tool. This allows both tools to be adjusted to the same center height.

[0024] The cutting tool on the machining head is preferably tilted negatively relative to the working cavity, particularly in the range of 1° to 10°. This allows for improved surface quality on the workpiece to be machined.

[0025] Furthermore, it is preferable to pre-set the main tool to be aligned with the working cavity at an angle of 1° to 10°. A favorable adjustment range can be selected corresponding to the choice of tool material and / or the geometry of the tool and / or the workpiece to be machined.

[0026] The holder of the machining head preferably has a pre-installed insert receptacle for interchangeably arranging inserts, particularly indexable inserts. This allows for easy modification of the cutting tool according to the material to be machined. Alternatively, the holder may include a fixedly welded tool.

[0027] Advantageously, the retainer can be fitted with a WIPER tool. This allows for simultaneous cutting and subsequent surface finishing of the machined workpiece.

[0028] Furthermore, the objective of this invention is achieved through a method for machining a rotating workpiece, comprising a cutting tool including a tool base for mounting on a machine tool. This cutting tool includes at least one machining head pre-installed on the tool base, which houses the cutting tool via a retainer and is aligned with the working cavity of the tool to be machined. Viewed in the cutting direction of the cutting tool, a dressing material is subsequently applied directly to the workpiece surface machined by the cutting tool after the machining operation via a feeding device. Therefore, the machining operation and the application of dressing material for forming a friction film, or for dressing the machined surface, can be directly and sequentially performed. This makes it possible to dress the surface of the workpiece machined by the cutting tool. Thus, a surface sealed by the dressing material can be obtained.

[0029] Furthermore, it is preferably assumed that the dressing material is designed as a solid body and is applied to the surface to be processed by friction via a feeding device. On the surface of the material, the dressing material adhering thereto forms a friction surface, such that the dressing material is transferred to the surface of the processed workpiece due to contact with the surface and due to the resulting erosion.

[0030] Furthermore, preferably, the dressing material is supplied to the working chamber via a feeding device pre-installed within the holder of the processing head, through a feed port pre-installed on the end face of the holder. The feed port is preferably aligned with the flank face of the cutting tool on the holder. Thus, the holder can function dually: on the one hand, it accommodates the cutting tool, and on the other hand, it directly and adjacently guides the dressing material.

[0031] Preferably, the diameter of the dressing material, or the cross-section of the material that serves as a friction surface in close contact with the surface of the machined workpiece, is equal to or greater than the cutting radius of the cutting tool, or equal to or greater than the width of the turning marks on the workpiece surface caused by the cutting geometry of the cutting tool. Thus, the turning marks generated by the cutting process are directly and immediately sealed by the dressing material, and preferably coated with a thin film.

[0032] According to a preferred embodiment of the method, a material holder is connected to an output device for dressing material, and the dressing material is output via a feed port on the holder. This embodiment allows for the dressing of machining marks directly after the workpiece surface has been machined. Alternatively, the output device may be pre-configured to be separate from the machining head and positioned and oriented relative to the workpiece's surface to be machined. The dressing material is output onto the machined surface of the workpiece through the feed port in the output device.

[0033] Advantageously, the dressing material is pre-designed to be rod-shaped or pin-shaped and, guided by a mold, supplied to the workpiece's surface to be machined by an output device. This allows for adjustment of the parameters used to supply the dressing material.

[0034] Preferably, the dressing material is pressurized by an output device, which causes the dressing material to be drawn out from the feeding device, and the clamping force of the friction surface of the dressing material on the surface of the machined workpiece is affected. The clamping force of the dressing material on the machined surface can be adjusted by the output device.

[0035] Preferably, a constant pressure is preset to be applied to the trimming material via the output device. This allows for setting the same friction ratio when applying the trimming material.

[0036] The output device can be hydraulically, pneumatically, electromagnetically, or motor-driven to output dressing material, and the output pressure can be controlled by the control unit of the machine tool used for cutting. This makes it possible to adapt the material of the workpiece to be processed individually.

[0037] Furthermore, the objective of this invention is achieved by a machining head for cutting machine tools, which includes a holder for accommodating a cutting tool, wherein the machining head includes the advantageous embodiments described above with respect to the machining head. Attached Figure Description

[0038] The invention and its further advantageous embodiments and improvements are described and illustrated in more detail below with reference to examples shown in the accompanying drawings. According to the invention, the features to be derived from the specification and drawings can be applied individually or in any combination. In the drawings:

[0039] Figure 1 A schematic side view of the cutting tool is shown.

[0040] Figure 2 It shows that according to Figure 1 A schematic top view of a cutting tool.

[0041] Figure 3 It shows that according to Figure 1 A schematic cross-sectional view of a first embodiment of the machining head of a cutting tool.

[0042] Figure 4 It shows relative to Figure 3 A schematic cross-sectional view of an alternative embodiment of a processing head, and

[0043] Figure 5 It shows relative to Figure 1 A schematic side view of an alternative implementation. Detailed Implementation

[0044] exist Figure 1 The diagram shows a schematic side view of the cutting tool 11. Figure 2 It shows that according to Figure 1 A schematic top view of a cutting tool 11. This cutting tool 11 includes a tool base 12 on which an interface 14 is provided. Through this interface 14, the tool base 12 can be inserted into and / or held in a machine tool (not shown in detail) for at least one cutting operation. First and second machining heads 16, 17 are provided on the tool base 12. Two embodiments of these machining heads 16, 17 are shown. Figure 3 and Figure 4 In the cross-sectional view, machining heads 16 and 17 are pre-positioned to face each other. A working cavity 18, particularly in the form of a working clearance, is formed between machining heads 16 and 17. The workpiece 19 to be machined, driven by the rotation of the machine tool, is introduced into the working cavity 18 through a feed motion. During this process, cutting is performed to remove, for example, machining allowances from the workpiece 19. Two opposing surfaces 20 of the workpiece 19 can be machined simultaneously.

[0045] exist Figure 1 and Figure 2 In the embodiment shown, the machining head 16 is positioned on an L-shaped support 22. An adjustment device 24 is mounted on this support 22. The machining head 16 is height-adjustable relative to the opposing machining head 17 via the adjustment device 24. The adjustment device 24 can be manually operated, for example, via the fine-tuning adjustment bolt shown. Alternatively, the adjustment device 24 can be operated by a pneumatic, hydraulic, electrical, electromagnetic, or mechanical actuator. This actuator can be operated via the control unit of the machine tool.

[0046] The machining head 17 is, for example, housed on the tool base 12. An adjustment device 26 is provided between the tool base 12 and the machining head 17. The width of the working cavity 18 between the two machining heads 16 and 17 can be adjusted by means of the adjustment device 26. The adjustment device 26 can also be manually operated by means of an adjustment bolt, or operated by means of a drive similar to that used for the adjustment device 24, via the control device of the machining tool.

[0047] Alternatively, it can be pre-configured that each processing head 16, 17 is equipped with an adjustment device 24 and / or an adjustment device 26.

[0048] Furthermore, the tool base 12 may include a feed device 28. This feed device 28 allows for the movable manipulation of only one machining head 16, 17 or two machining heads 16, 17, taking into account the width of the working cavity 18. Particularly after machining of the workpiece 19 is completed, the feed device 28 can be used to control the relative separation of at least one machining head 16, 17, making it possible to easily remove the machined workpiece 19 from the working cavity 18. The feed device 28 can be operated pneumatically, hydraulically, electrically, electromagnetically, or in a similar manner, preferably via the control device of the machine tool.

[0049] The machining heads 16 and 17 include at least one retainer 21. A tool 31 is pre-mounted on each retainer 21 of the machining heads 16 and 17. The positioning and orientation of the respective tool 31 relative to the working chamber 18 can be adjusted by means of the machining heads 16 and 17 and / or the retainers 21.

[0050] The retainer 21 has an end face 36 pointing towards the working cavity 18, which, when viewed in the cutting direction, is located behind the tool 31. The end face 36 is arranged at an angle that corresponds to or is larger than the flank face of the tool 31.

[0051] The processing heads 16 and 17 preferably each include an output device 38, which is detachably fixed to the retainer 21. For example, a bolted connection, clamp connection, or bayonet connection can be pre-installed. A feeding device 41 for trimming material 42 is pre-installed in the retainer 21. Through the detachable arrangement of the output device 38 relative to the retainer 21, the trimming material 42 can be loaded into the feeding device 41. Preferably, the feeding device 41 is designed as a through-hole 43. This through-hole traverses the retainer 21. The feed port 44 of the feeding device 41 is pre-installed within the end face 36 of the retainer 21. Preferably, this feed port 44 directly abuts the tool 31. This is, for example, based on... Figure 3 The schematic cross-sectional views of the machining heads 16 and 17 are obtained.

[0052] Output device 38 includes interface 46. A media interface of a machine tool can be connected to it. Preferably, a compressed air interface is pre-installed on interface 46. In output device 38, a pressurizable punch 48 can be displaced in punch guide 49. The punch 48 includes a pin-shaped end 51 that extends into feed device 41 and guides trimming material 42 through feed device 41.

[0053] The trimming material 42 is preferably designed as a solid body. For example, it can be designed as a pin. The trimming material 42 is adapted in cross-section to the feeding device 41. The cross-section of the feeding device 41 can be circular, polygonal, or striped. The cross-section of the trimming material 42 is preferably adapted to this.

[0054] The feeding direction of the trimming material 42 is preferably at an angle of less than 90° relative to the working chamber 18 or to the surface 20 to be processed of the workpiece 19.

[0055] Viewed in the cutting direction, the feed inlet 44 of the feeding device 41 is preferably located directly behind the tip of the cutting tool 31. During the cutting process on the surface 20 of the workpiece, turning marks are generated. The supply of dressing material 42 via the feeding device 41 is pre-programmed, so that the dressing material 42 is directly distributed to the turning marks. By placing the dressing material 42 on the surface 20 of the machined workpiece 19, especially on the turning marks, a friction surface is generated on the dressing material 42, and the turning marks are dressed by the dressing material 42 through this friction surface. Due to the close contact of the dressing material 42 with the friction surface, a film or coating is formed on the turning marks by the dressing material. Thus, a dressing film or friction film can be completed.

[0056] exist Figure 3 The enlarged view shows according to Figure 1 and Figure 2 The machining heads 16 and 17. The retainer 21 of the machining heads 16 and 17 houses the fixedly welded cutting tools 31. These cutting tools 31 can be made of ultra-hard tool materials, such as hard metals or tool materials such as CVD-D (CVD thick film diamond), PKD (polycrystalline diamond), or CBN (cubic boron nitride).

[0057] Preferably, the center height of the opposing tools 31 is almost zero or zero. Furthermore, the tool 31 has a clearance angle 32. Figure 1 The angle is preferably between 1° and 15°, and particularly between 4° and 10°.

[0058] Furthermore, preferably, the secondary tool 37 is aligned with the surface 20 of the workpiece 19 to be machined at an angle of up to 7°, preferably 2 to 4°. The tool 31 is preferably aligned with the surface 20 of the workpiece 19 to be machined at a 0° tilt angle. For the tool 31, the primary tool 34 can be positioned, for example, within a rake angle of 1° to 10°, preferably 4° to 6°. The secondary tool 37 is capable of being aligned with the surface 20 of the workpiece 19 to be machined according to… Figure 2 For example, the angle 35 is oriented at 1° to 10°, preferably 2° to 5°. The design of the tool 31 and its positioning within the machining angle relative to the surface 20 of the workpiece 19 to be machined mainly depend on the material to be machined, the machining speed, and the quality requirements for the surface 20 of the workpiece 19.

[0059] exist Figure 4 The text shows relative to Figure 3An alternative embodiment of machining heads 16 and 17 is described. The difference between machining heads 16 and 17 lies in the design of the retainer 21. It has a blade receiving portion 54 for replaceably accommodating blades 55. Preferably, these blades 55 can also be designed as indexable blades, which can also include blades made of PKD, CBN tool materials, and CVD thick-film diamond or hard metal.

[0060] The inserts 55 pre-installed on the machining heads 16 and 17 are preferably oriented in the same manner as in the embodiment where the cutter is fixedly welded to the retainer 21. Preferably, in this embodiment, the center height of the cutters 31 facing each other is also zero. Furthermore, the cutting face of the main cutter 34 can be negatively inclined towards the retainer 21 at 5° to 15°, preferably 8° to 11°. Additionally, the cutter 31 of the inserts 55 can have a clearance angle 32 (…). Figure 1 The angle 35 is preferably between 1° and 15°, particularly between 4° and 8°. The main tool 34 is capable of pointing at the surface 20 of the workpiece 19 to be machined with a cutting rake angle of 1° to 8°, preferably 4° to 6°. The secondary tool can be positioned at an angle 35 within the range of 1° to 15°, preferably 3° to 6°. Figure 2 ), pointing to the surface 20 of the workpiece 19 to be processed.

[0061] On this retainer 21 with the insert receiving portion 54, a cutting tool with a WIPER geometry can also be used. This insert makes improved surface quality possible because the WIPER geometry smooths out one or more previously generated turning marks.

[0062] The workpiece 19 to be machined can be, for example, a light metal brake disc. Both surfaces 20 of the friction ring of the brake disc are machined simultaneously. The brake disc can be made of high-hardness particle-reinforced aluminum matrix composite (AMC). The machining heads 16, 17 are adjusted into the working chamber 18. The width of the working chamber 18 corresponds to the finished size for machining the friction ring of the brake disc. Next, the brake disc, or workpiece 19, is rotated and supplied to the working chamber 18 according to arrow A. The friction ring of the brake disc is machined simultaneously using double-sided cutting. At the same time, the output device 38 is driven, specifically applying pressure to it, causing the dressing material 42 to adhere tightly to the corresponding surface 20 of the friction ring, or workpiece 19. Due to the feed motion of the machine tool, the workpiece 19 gradually moves into the working chamber 18 until the surface 20 to be machined is completed.

[0063] The dressing material 42 is applied directly to the cutting point using the cutting tool 11. Therefore, surface changes 20 caused by oxidation or other factors can be prevented to some extent. Furthermore, by directly applying the dressing material 42, the machined surface 20 of the workpiece 19 can be sealed and dressed.

[0064] exist Figure 5 The text shows relative to Figure 1 A schematic side view of an alternative embodiment of the cutting tool 11. In this embodiment of the cutting tool 11, the supply of dressing material 42 is presupposed not to be achieved through the retainer 21 that houses the cutting tools 31, 55.

[0065] In this embodiment, the machining heads 16 and 17 include a retainer 21 that houses a fixedly welded cutting tool 31 or an indexable cutting tool 55. The retainer 21 may be preset on the corresponding adjustment devices 24 and 26 and / or the feed device 28 to adjust the machining width or gap width of the working cavity 18 between the opposing cutting tools 31 and 55 and its positioning relative to the workpiece 19 on the surface 20 to be machined.

[0066] The output device 38 for discharging the finishing material 42 onto the machined surface 20 of the workpiece 19 is arranged separately from the retainer 21. The output device 38 is positioned relative to the working cavity 18 immediately following the retainer 21. This following arrangement may be directly adjacent to the retainer 21, or positioned, for example, at 90° or, as shown, at 180° following the retainer 21.

[0067] The output device 38 includes a feeding device 41 through which finishing material 42 is output via a feed port 44 and coated or applied to the machined surface 20 of the workpiece 19. For outputting the finishing material 42, the output device 38 is connected to, for example, a compressed air supply device via an interface (not shown in detail). This interface 46 is shown on the output device 38. Figure 3 and Figure 4 According to Figure 5 The output device 38 also includes a punch 48, of which only the pin-shaped end 51 for discharging the trimming material 42 is shown. The output device 38 can be designed similarly to one of the previously described embodiments.

[0068] The output device 38 is operated in parallel corresponding to the feed movements of one or more retainers 21. The surface 20 of the workpiece 19 is machined using tools 31 and 55, forming a so-called trace 57. The feed port 44 of the feed device 41 of the output device 38 is positioned within the trace 57 of the cutting tools 31 and 55. The feed movements of the cutting tools 31 and 55 of the cutting tools 11 correspond to the feed movements of the output device 38, causing the dressing material 42 to follow the trace 57 re-formed on the surface 20 of the workpiece 19 to be machined by the tools 31 and 55.

[0069] Alternatively, it can be pre-configured that two or more output devices 38 are adjacent to each other and belong to the same mark 57. Furthermore, it can be pre-configured that one output device 38 is aligned with the mark 57 formed by the tools 31, 55, and, for example, another output device 38 is offset by one or more marks relative to the currently formed mark 57, making additional rework possible by applying dressing material 42. The output devices 38 and the cutting tool 11 are preferably arranged on the same machine tool and controlled by controlling the machine tool in terms of feed or cutting motion relative to the workpiece 19's surface 20 to be machined.

Claims

1. A cutting tool (11) for cutting a rotating workpiece (19), comprising a tool base (12), including at least one machining head (16, 17) pre-installed on the tool base (12), the machining head receiving a cutting tool (31) via a retainer (21), the cutting tool being aligned with a working cavity (18) for the workpiece (19) to be machined, wherein, viewed in the cutting direction, a feeding device (41) is pre-installed after the cutting tool (31) for applying dressing material (42) to the surface (20) of the workpiece (19) machined by the cutting tool (31), and the feeding device (41) is pre-installed on or within the retainer (21) of the machining head (16, 17), characterized in that, The feed inlet (44) of the feeding device (41) is pre-set to be adjacent to the back face of the cutting tool (31), and the dressing material (42) is designed as a solid body. An output device (38) is pre-installed, through which the trimming material (42) can be led out through the feeding device (41) toward the working chamber (18). The output device is pre-installed on the retainer (21) of the processing head (16, 17). The output device (38) has at least one pressurizable punch (48) through which the trimming material (42) can be drawn out from the feed port (44) of the feeding device (41).

2. The cutting tool (11) according to claim 1, characterized in that, The feeding device (41) has a feed inlet (44) which is oriented toward the working chamber (18) and is aligned with the working chamber (18) at an acute angle.

3. The cutting tool (11) according to claim 2, characterized in that, The feed port (44) of the feeding device (41) is located inside the end face (36) of the retainer (21), the end face pointing towards the working chamber (18), and the end face (36) of the retainer (21) is preset with the following rear angle, the rear angle being equal to or greater than the rear angle of the cutter (31), and the feeding device (41) is designed as a perforation in the retainer (21), the opening of the perforation for loading the trimming material (42) being opposite to the feed port (44).

4. The cutting tool (11) according to claim 1, characterized in that, The output device (38) is detachably fixed to the retainer (21), or the output device (38) has at least one interface opposite to the retainer (21) for operating the output device (38).

5. The cutting tool (11) according to claim 1, characterized in that, The feed inlet (44) of the feeding device (41) for the trimming material (42) is oriented at an angle of less than 90° or at an angle of 90° toward the working cavity (18), or two processing heads (16, 17) are pre-set on the tool base (12) opposite to each other, the processing heads forming an intermittent working cavity (18).

6. The cutting tool (11) according to claim 1, characterized in that, At least one of the two machining heads (16, 17) is pre-configured to be displaceable on the tool base (12) to adjust the width of the working cavity (18), and at least one of the two machining heads (16, 17) is adjustable relative to the opposite tool (31) at the height of the tool (31) of one machining head (16, 17).

7. The cutting tool (11) according to claim 1, characterized in that, The cutting tool (31) on the processing head (16, 17) is tilted negatively relative to the working chamber (18).

8. The cutting tool (11) according to claim 1, characterized in that, The main cutting tool (34) of the cutting tool (31) is oriented at an angle of 1° to 10° relative to the working cavity (18).

9. The cutting tool (11) according to claim 1, characterized in that, The holder (21) of the machining head (16, 17) has a blade receiving portion (54) for interchangeably arranging the blade (55), or the holder (21) of the machining head (16, 17) includes a fixedly welded tool (31).

10. A method for machining a rotating workpiece (19), wherein a cutting tool (11) according to claim 1, comprising a tool base (12), is used, wherein at least one machining head (16, 17) is pre-set on the tool base, the machining head receiving a cutting tool (31) via a retainer (21) and aligned with a working cavity (18) for machining the workpiece (19), wherein, viewed in the cutting direction of the cutting tool (31), a dressing material (42) is subsequently applied to the surface (20) of the workpiece (19) machined by the cutting tool (31) via a feeding device (41), characterized in that, After the cutting process, the dressing material (42) is applied to the machined surface (20) of the workpiece (19) behind the cutting tool (31). The dressing material (42) is designed as a solid body and is applied to the machined surface (20) of the workpiece (19) by friction through the feeding device (41).

11. The method according to claim 10, characterized in that, The feeding device (41) is pre-set in the retainer (21) of the processing head (16, 17), and the feed port (44) of the feeding device (41) is aligned with the end face (36) of the retainer (21), or is oriented to be adjacent to the back face of the cutting tool (31).

12. The method according to claim 10, characterized in that, An output device (38) is connected to the holder (21) of the processing head (16, 17), and the finishing material (42) is output through the feed port (44) on the holder (21); or the output device (38) is positioned separately from the processing head (16, 17) relative to the surface (20) to be processed of the workpiece (19), and the finishing material (42) is output through the feed port (44) on the output device (38).

13. The method according to claim 10, characterized in that, The trimming material (42) is loaded by the output device (38) and drawn out from the feeding device (41) in the direction of the machined surface (20) of the workpiece (19).

14. The method according to claim 10, characterized in that, The diameter of the dressing material (42) or the cross section that serves as the friction surface in close contact with the surface (20) of the workpiece (19) is selected to be as large as or greater than the width of the turning marks (57) produced by the cutting geometry of the tool (31).

15. The method according to claim 10, characterized in that, The finishing material (42) is designed as a solid body or as a profile body and is supplied to the machined surface (20) of the workpiece (19) via the feeding device (41) and the output device (38).

16. The method according to claim 10, characterized in that, The trimming material (42) is designed as a rod-shaped or pin-shaped solid body.

17. The method according to claim 10, characterized in that, The output device (38) is driven hydraulically, pneumatically, electromagnetically, or by a motor to output the trimming material (42), and the pressure for loading the trimming material (42) is controlled by the control device of the machine tool.

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